ERalumSherry Stringfieldhas joined the cast ofUnder the Domefor Season 2, TVGuide.com has learned.Stringfield, who is best-known for playing Dr. Susan Lewis on the NBC medical drama, will play Pauline, a mysterious woman who may be connected to the origins of ...

Stringfield, who is best-known for playing Dr. Susan Lewis on the NBC medical drama, will play Pauline, a mysterious woman who may be connected to the origins of the dome. Other details about her character are being closely guarded, but you can connect the dots.

"I'm thrilled after all these years to be working again with Sherry Stringfield," executive producer Neal Baer says. "We had a blast on ER together and I know Sherry will bring the same grace, spirit and intensity to her new, pivotal role onUnder the Dome."